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Method and system for preparing hydrogen-rich synthesis gas through chemical chain reforming of carbon-based solid fuel

A solid fuel and chemical chain technology, applied in the field of carbon-based solid fuel chemical chain reforming to prepare hydrogen-rich synthesis gas, can solve the problems of difficult product regulation and numerous chemical reactions, and achieve energy saving, avoid reaction rate, and reduce reaction Effect of device and reaction time

Active Publication Date: 2022-04-15
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems in the prior art that many chemical reactions occur in a single reactor and the products are difficult to control, the present invention provides a method and system for preparing hydrogen-rich synthesis gas by chemical chain reforming of carbon-based solid fuel

Method used

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  • Method and system for preparing hydrogen-rich synthesis gas through chemical chain reforming of carbon-based solid fuel
  • Method and system for preparing hydrogen-rich synthesis gas through chemical chain reforming of carbon-based solid fuel
  • Method and system for preparing hydrogen-rich synthesis gas through chemical chain reforming of carbon-based solid fuel

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Embodiment approach

[0067] The invention mainly includes a pyrolysis reactor, a reforming reactor, a regenerative reactor and its accessory parts as well as a key oxygen carrier.

[0068] Such as figure 1 and figure 2 As shown, the carbon-based solid fuel, such as biomass, undergoes pyrolysis reaction in the pyrolysis reactor to generate volatile matter and coke, and the volatile matter mainly contains CH 4 , CO 2 , CO, H 2 Mainly small molecular pyrolysis gas of small molecules and tar of large molecules represented by benzene and toluene.

[0069] The volatile matter enters the reforming reactor, and the coke is sent to the regeneration reactor. Among the volatiles entering the reforming reactor, the large molecular tar is catalytically cracked under the catalytic action of the oxygen carrier to generate small molecular pyrolysis gas. The small molecular pyrolysis gas reacts with the lattice oxygen provided by the oxygen carrier to form H 2 and CO-based hydrogen-rich synthesis gas. The ...

Embodiment 1

[0073] Such as image 3 As shown, a carbon-based solid fuel chemical chain reforming system for preparing hydrogen-rich synthesis gas according to the present invention includes a pyrolysis reactor 1, a regeneration reaction device, a reforming reactor 3, a scrubbing device 6, a product gas storage tank 7, Steam generator 12 and some cyclone separators, wherein

[0074] The volatile matter outlet of the pyrolysis reactor 1 is connected to the first cyclone separator 4, and then connected with the steam generating device 12 to the volatile matter inlet of the reforming reactor 3, and is divided into three streams, and the coke outlet of the pyrolysis reactor 1 passes through a pipeline Connect the coke inlet of the regenerative reactor 2, wherein the solid particle outlet of the first cyclone separator 4 is connected to the solid particle inlet of the pyrolysis reactor 1;

[0075] The synthesis gas outlet of the reforming reactor 3 is connected to the second cyclone separator ...

Embodiment 2

[0078] The process flow of the chemical chain reformation method is as follows: image 3 shown, including the following steps:

[0079] 1. Pyrolysis.

[0080] Carbon-based solid fuel, such as biomass, enters the pyrolysis reactor 1 via a conveyor belt, and undergoes pyrolysis under an inert atmosphere, such as an argon atmosphere, to generate volatile components and coke. The volatile components include pyrolysis gas and tar , where the pyrolysis gas includes small molecule pyrolysis gas, namely CH 4 , CO 2 , CO and H 2 , tars include benzene, toluene, phenol and naphthalene.

[0081] As the gas is generated, the volatile matter is discharged and enters the cyclone separator 4 from the top of the pyrolysis reactor 1. After the volatile matter passing through the cyclone separator 4 is mixed with water vapor, it is sent to the reforming reactor 3 and separated by a cyclone. The solid particles, including unreacted biomass and coke, separated from reactor 4 are returned to ...

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Abstract

The invention belongs to the field of thermal conversion and utilization of solid fuel, and particularly relates to a method and system for preparing hydrogen-rich synthesis gas through chemical chain reforming of carbon-based solid fuel. The carbon-based solid fuel is subjected to a pyrolysis reaction in the pyrolysis reactor, volatile matters and coke are generated, the volatile matters comprise micromolecular pyrolysis gas and macromolecular tar, the volatile matters enter the reforming reactor, and the coke is fed into the regeneration reactor; in the volatile matter entering the reforming reactor, tar is subjected to catalytic cracking under the catalytic action of an oxygen carrier to generate micromolecular pyrolysis gas, and the micromolecular pyrolysis gas reacts with lattice oxygen in the oxygen carrier to generate hydrogen-rich synthesis gas; the coke introduced into the regeneration reactor is subjected to combustion reaction with air to release heat, and the reacted oxygen carrier is fed into the regeneration reactor to react with air to supplement lattice oxygen; the oxygen carrier carries heat to be sent into the reforming reactor, lattice oxygen and heat are provided, and the catalytic action is exerted. The pyrolysis reaction and the reforming process are separated, and the gasification efficiency and the product synthesis gas quality are improved.

Description

technical field [0001] The invention belongs to the field of thermal conversion and utilization of solid fuels, in particular to a method and system for preparing hydrogen-rich synthesis gas by chemical chain reforming of carbon-based solid fuels. Background technique [0002] With the rapid development of modern industry, the demand for energy is increasing, and the energy problem is becoming more and more severe. Carbon-based solid fuel is the most important and widely distributed energy source in my country, and the rational use of high quality is of great significance to alleviate my country's energy problems. There are many types of carbon-based solid fuels, such as biomass, coal, oil shale, etc. Taking the most widely distributed biomass as an example, a large number of biomass resources are not fully utilized in my country every year. As a renewable carbon source, biomass can be converted into gaseous renewable fuel through gasification, and biomass is used as a raw ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/58C10J3/84
Inventor 吴志强李运昌杨伯伦张博张榕江毛向阳
Owner XI AN JIAOTONG UNIV
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